136813 has 2 divisors, whose sum is σ = 136814. Its totient is φ = 136812.

The previous prime is 136811. The next prime is 136841. The reversal of 136813 is 318631.

136813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128164 + 8649 = 358^2 + 93^2 .

It is a cyclic number.

It is not a de Polignac number, because 136813 - 2¹ = 136811 is a prime.

Together with 136811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68406 + 68407.

It is an arithmetic number, because the mean of its divisors is an integer number (68407).

2¹³⁶⁸¹³ is an apocalyptic number.

It is an amenable number.

136813 is a deficient number, since it is larger than the sum of its proper divisors (1).

136813 is an equidigital number, since it uses as much as digits as its factorization.

136813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 136813 is about 369.8824137479. The cubic root of 136813 is about 51.5279014298.

It can be divided in two parts, 136 and 813, that added together give a palindrome (949).

The spelling of 136813 in words is "one hundred thirty-six thousand, eight hundred thirteen".